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  Date: 2021/4/20
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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>jsp页面</title>
  </head>
  <body>
  <h1>所有的演示例子</h1>
  <h3><a href="daodb">处理dao中数据库异常</a></h3>
  <h3><a href="daomy">处理dao中自定义异常</a></h3>
  <h3><a href="daono">处理dao未知错误</a></h3>
  <hr>
  <h3><a href="servicedb">处理service中数据库异常</a></h3>
  <h3><a href="servicemy">处理service中自定义异常</a></h3>
  <h3><a href="serviceno">处理service未知错误</a></h3>
  <hr>
  <h3><a href="db">处理controller中数据库异常</a></h3>
  <h3><a href="my">处理controller中自定义异常</a></h3>
  <h3><a href="no">处理controller未知错误</a></h3>
 </body>
</html>
